| 摘要 |
<p>A vibration damping article includes a) a substrate having a density of at least about 10 lb/ft3 and a flexural modulus of at least about 110,000 psi; and b) a foam layer bonded to said substrate, said foam layer having a loss tangent of greater than about 0.2 in the range of 10 to 20,000 Hz and a compressive storage modulus of from about 105 dynes/cm2 to about 1010 dynes/cm2 in the range of 10 to 20,000 Hz.</p> |
